Doug Thorley 1 7/8" Tri-Y Long Tube Headers - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Iam Broke · 01-06-2013, 06:55 PM

Did a search, found an old thread from 2010, was wondering how the tri-y lt headers are working out for those that have them?

Going TVS2300 so I want it to be able to breath and I like the idea of the midrange torque. Opinions? Gains?

Iam Broke · 01-07-2013, 07:17 AM

Anyone? Bueller?

IndeedSS1 · 01-07-2013, 08:02 AM

Quote:

Originally Posted by Iam Broke

Did a search, found an old thread from 2010, was wondering how the tri-y lt headers are working out for those that have them?

Going TVS2300 so I want it to be able to breath and I like the idea of the midrange torque. Opinions? Gains?

Won't the supercharger give way enough low to mid range torque without the Tris? I would assume with a SC you'd want at least 1 7/8.

Bo White · 01-07-2013, 08:12 AM

I would throw some 1 7/8" LT headers on.

Iam Broke · 01-07-2013, 08:57 AM

Quote:

Originally Posted by IndeedSS1

Won't the supercharger give way enough low to mid range torque without the Tris? I would assume with a SC you'd want at least 1 7/8.

They are 1 7/8" according to the listings I've found. I guess no one runs them anymore. I see them listed as catted and catless on the DT site, but only see catless for sale various places.

IndeedSS1 · 01-07-2013, 08:59 AM

Quote:

Originally Posted by Iam Broke

They are 1 7/8" according to the listings I've found. I guess no one runs them anymore. I see them listed as catted and catless on the DT site, but only see catless for sale various places.

I thought those were 1 3/4 into 1 7/8 and yep no cats. I was looking at those because I didn't like the 1 7/8 headers I had on.

Iam Broke · 01-07-2013, 09:02 AM

Quote:

Originally Posted by IndeedSS1

I thought those were 1 3/4 into 1 7/8 and yep no cats. I was looking at those because I didn't like the 1 7/8 headers I had on.

These are listed as 1 7/8", not the stepped ones. Funny the DT site says catted or catless, I emailed them. We'll see.

http://marylandspeed.com/doug-thorle...9y-p-3499.html

IndeedSS1 · 01-07-2013, 09:20 AM

Quote:

Originally Posted by Iam Broke

These are listed as 1 7/8", not the stepped ones. Funny the DT site says catted or catless, I emailed them. We'll see.

http://marylandspeed.com/doug-thorle...9y-p-3499.html

Ah I was looking at these and the stepped

Anyway I'm pretty sure Ivan from Southwest Speed said they didn't have a bolt up cat option and linked to a Magnaflow cat that could be welded in. DT will know for sure.

Fast6.3 · 01-07-2013, 09:56 AM

they sell both 1 3/4 and 1 7/8 supposedly the 1 3/4 make more power than the 1 7/8. you can put them on and take it to your muffler shop to weld in the cats

Icntdrv55 · 01-07-2013, 10:44 AM

I have them and love them. No problems at all. Good fit and finish!
Have had them on for over a year.

Iam Broke · 01-07-2013, 11:05 AM

Quote:

Originally Posted by Icntdrv55

I have them and love them. No problems at all. Good fit and finish!
Have had them on for over a year.

If you self installed them, how high did you have to get the car to get them under?

Bo White · 01-07-2013, 11:32 AM

IndeedSS1, I love everything about my 1 3/4 JBA LTs, I lost absolutely no off idle torque(and may have gained a touch). I can idle in 4th gear in my car without touching the clutch or gas pedal through a parking lot with it, no bucking.

68Duece · 01-07-2013, 11:38 AM

I have the DT 1 3/4 long tubes, no cats on my 2011 Prochaged SS. The install with really easy, and they look awesome. The headers still look new with no color changes. I used a lift at a friends shop. I really wish I would've installed cats but after reading about issues with cats blowing out on boosted cars I decided to not waste the $$. I also have factory mid pipes and JBA axle back. I really want to change the axle back to something that will give the car a better tone, the volume doesnt bother me its just I dont think it sounds good. I have been looking at the flowmaster hushpower series. Any ideas??

thahemp · 01-07-2013, 11:40 AM

They are mild steel and ceramic coated. You can buy them for $653 straight from the DT site. Pretty cheap considering they come with connecting pipes too, albeit un-catted.

That might be worth looking at.

01-06-2013, 06:55 PM	#1
Iam Broke PHAT B33 Drives: 2012 TF3 Camaro 2SS/RS M6 Join Date: Jun 2012 Location: Dark of the Moon Posts: 1,460 View My Garage	Doug Thorley 1 7/8" Tri-Y Long Tube Headers Did a search, found an old thread from 2010, was wondering how the tri-y lt headers are working out for those that have them? Going TVS2300 so I want it to be able to breath and I like the idea of the midrange torque. Opinions? Gains? __________________ Another 1 of 371 '12 T3 LS3 M6's built. Last edited by Iam Broke; 01-07-2013 at 04:47 AM.

01-07-2013, 07:17 AM	#2
Iam Broke PHAT B33 Drives: 2012 TF3 Camaro 2SS/RS M6 Join Date: Jun 2012 Location: Dark of the Moon Posts: 1,460 View My Garage	Anyone? Bueller? __________________ Another 1 of 371 '12 T3 LS3 M6's built.

01-07-2013, 08:12 AM	#4
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,019	I would throw some 1 7/8" LT headers on. __________________ Retired wanna be cylinder head porter 2015 2SS 1LE Clutch reservoir, Vararam DRX, ported TB, TSP 2" headers, MGW shifter Totalled: 2010 1SS Wilkes Performance/Eagle 416 shortblock, TSP custom valvetrain, PRC 260 heads, Edelbrock Pro Flo 102, th400 swap, 8" PTC 5500 stall= 535/435 at the wheels tuned Gen 3 Performance and Dyno 10.97 @ 124 full weight in 3100 DA CamaroFest X

01-07-2013, 09:56 AM	#9
Fast6.3 Drives: 2016 2SS coupe 2015 3LT Stingray Join Date: Aug 2012 Location: El paso texas Posts: 880 View My Garage	they sell both 1 3/4 and 1 7/8 supposedly the 1 3/4 make more power than the 1 7/8. you can put them on and take it to your muffler shop to weld in the cats __________________ Ported intake manifold and throttle body kooks 2" headers no cats

01-07-2013, 10:44 AM	#10
Icntdrv55 CCOTR Member Drives: Victory Red 2010 2SS/RS A6 Join Date: Jun 2009 Location: Parker CO Posts: 1,096	I have them and love them. No problems at all. Good fit and finish! Have had them on for over a year. __________________ Camaro Club Of The Rockies (CCOTR) Check us out on Facebook! --------------------------- 2010 Camaro SS/RS Victory Red A6- Vararam Intake, Doug Thorley Tri Y LTs, Magnaflow X-pipe, Flowmaster Super 40's, VMS Tune, Razzi Ground Effects, Herritage Grill, RED headlight and fog light Halos, LED DRLs, Dash and extended Door ABL, engine, grill and rear defusser LED lighting ........ 12.59@112.21 (DA Corrected)

01-07-2013, 11:32 AM	#12
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,019	IndeedSS1, I love everything about my 1 3/4 JBA LTs, I lost absolutely no off idle torque(and may have gained a touch). I can idle in 4th gear in my car without touching the clutch or gas pedal through a parking lot with it, no bucking. __________________ Retired wanna be cylinder head porter 2015 2SS 1LE Clutch reservoir, Vararam DRX, ported TB, TSP 2" headers, MGW shifter Totalled: 2010 1SS Wilkes Performance/Eagle 416 shortblock, TSP custom valvetrain, PRC 260 heads, Edelbrock Pro Flo 102, th400 swap, 8" PTC 5500 stall= 535/435 at the wheels tuned Gen 3 Performance and Dyno 10.97 @ 124 full weight in 3100 DA CamaroFest X

01-07-2013, 11:38 AM	#13
68Duece Drives: 2011 Black 2SS Join Date: Dec 2010 Location: Concord, NC Posts: 33	I have the DT 1 3/4 long tubes, no cats on my 2011 Prochaged SS. The install with really easy, and they look awesome. The headers still look new with no color changes. I used a lift at a friends shop. I really wish I would've installed cats but after reading about issues with cats blowing out on boosted cars I decided to not waste the $$. I also have factory mid pipes and JBA axle back. I really want to change the axle back to something that will give the car a better tone, the volume doesnt bother me its just I dont think it sounds good. I have been looking at the flowmaster hushpower series. Any ideas??

01-07-2013, 11:40 AM	#14
thahemp Geek Drives: 2012 Black LS3 Join Date: Jan 2012 Location: Derby, KS Posts: 4,343 View My Garage	They are mild steel and ceramic coated. You can buy them for $653 straight from the DT site. Pretty cheap considering they come with connecting pipes too, albeit un-catted. That might be worth looking at. __________________ 01000111011011110110111101100100001000000110110001 11010101100011011010110010000001110111011010010111 01000110100000100000011101000110100001101001011100 110010000001101111011011100110010100100001 x = ac97968bd3df8f968c8cd3df998a9c94d3df9c8a918bd3df9c 909c94df8c8a9c949a8dd3df92908b979a8ddf998a9c949a8d d3df8b968b8cd1 x = ~x